This Standard specifies the boundary dimensions, tolerances and permissible values,
and g.a..u.g.i..n.g for thrust needle roller and cage assemblies, and thrust washers.
NOTE i This Standard specifies the boundary dimensions and tolerances of
needle roller bearings intending to ensure compatibility and not in-
tending to perform conformity assessment in accordance with this
Standard.
NOTE 2 The International Standard corresponding to this Standard is as follows.
ISO 3031: 2000 Rolling bearings- Thrust needle roller and cage assem-
blies, thrust washers- Boundary dimensions and tolerances (MOD)
In addition, symbols which denote the degree of correspondence in
the contents between the relevant International Standard and JIS are
IDT (identical), MOD (modified), and NEQ (not equivalent) according
to ISO/IEC Guide 21.